Overview

overview

10

Static

static

10

Synapse X.exe

windows10-ltsc 2021-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20241023-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    03/11/2024, 19:09

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General

  • Target

    Synapse X.exe

  • Size

    3.1MB

  • MD5

    e78c57ec9112a2860d4c07e1535452c6

  • SHA1

    cfb8f58daaa9ae932b2e55c04eb887210cbf0a41

  • SHA256

    64207a7e81e788dd1044a8fa6d6a4f87757cdd870af520a2e44576ac21a6e746

  • SHA512

    50597692c65f476d3f96d43fc97813c2747cacccd542eaf82cb736827ba02fb291e905b9a7410f891eee394f2252f37aceaf26fbc8dcef0ebdd21fbe37fcaf93

  • SSDEEP

    49152:bv2I22SsaNYfdPBldt698dBcjH4CD1JoLoGdESTHHB72eh2NT:bvb22SsaNYfdPBldt6+dBcjH4CK

Score
10/10
quasaroffice04discoveryspywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

Inversin-43597.portmap.host:43597

Mutex

80329fd2-f063-4b06-9c7e-8dbc6278c2a3

Attributes
  • encryption_key

    744EA1A385FEBC6DA96387411B7000D77E66B075

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    java updater

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

    trojanspywarequasar
  • Quasar family
    quasar
  • Quasar payload 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Time Discovery 1 TTPs 1 IoCs

    Adversary may gather the system time and/or time zone settings from a local or remote system.

    discovery
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 35 IoCs
  • Suspicious behavior: LoadsDriver 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\Synapse X.exe
    "C:\Users\Admin\AppData\Local\Temp\Synapse X.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1168
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "java updater" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:5116
    • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:3012
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /create /tn "java updater" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:3000
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s TimeBrokerSvc
    1⤵
    • System Time Discovery
    PID:2128
  • C:\Windows\System32\spoolsv.exe
    C:\Windows\System32\spoolsv.exe
    1⤵
      PID:1040
    • C:\Windows\System32\svchost.exe
      C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s NcbService
      1⤵
        PID:3112
      • C:\Windows\system32\sihost.exe
        sihost.exe
        1⤵
          PID:3336
        • C:\Windows\system32\sihost.exe
          sihost.exe
          1⤵
            PID:1096
          • C:\Windows\system32\sihost.exe
            sihost.exe
            1⤵
              PID:3092
            • C:\Windows\system32\sihost.exe
              sihost.exe
              1⤵
                PID:4608
              • C:\Windows\system32\sihost.exe
                sihost.exe
                1⤵
                  PID:4592
                • C:\Windows\system32\sihost.exe
                  sihost.exe
                  1⤵
                    PID:1496

                  Network

                  MITRE ATT&CK Enterprise v15

                  Replay Monitor

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                  Downloads

                  • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
                    Filesize

                    3.1MB

                    MD5

                    e78c57ec9112a2860d4c07e1535452c6

                    SHA1

                    cfb8f58daaa9ae932b2e55c04eb887210cbf0a41

                    SHA256

                    64207a7e81e788dd1044a8fa6d6a4f87757cdd870af520a2e44576ac21a6e746

                    SHA512

                    50597692c65f476d3f96d43fc97813c2747cacccd542eaf82cb736827ba02fb291e905b9a7410f891eee394f2252f37aceaf26fbc8dcef0ebdd21fbe37fcaf93

                    Download Submit

                  • memory/1168-0-0x00007FFE49483000-0x00007FFE49485000-memory.dmp

                    Filesize

                    8KB

                    Download

                  • memory/1168-1-0x0000000000330000-0x0000000000654000-memory.dmp

                    Filesize

                    3.1MB

                    Download

                  • memory/1168-2-0x00007FFE49480000-0x00007FFE49F42000-memory.dmp

                    Filesize

                    10.8MB

                    Download

                  • memory/1168-5-0x00007FFE49480000-0x00007FFE49F42000-memory.dmp

                    Filesize

                    10.8MB

                    Download

                  • memory/3012-7-0x00007FFE49480000-0x00007FFE49F42000-memory.dmp

                    Filesize

                    10.8MB

                    Download

                  • memory/3012-6-0x00007FFE49480000-0x00007FFE49F42000-memory.dmp

                    Filesize

                    10.8MB

                    Download

                  • memory/3012-8-0x000000001D1D0000-0x000000001D220000-memory.dmp

                    Filesize

                    320KB

                    Download

                  • memory/3012-9-0x000000001D2E0000-0x000000001D392000-memory.dmp

                    Filesize

                    712KB

                    Download

                  • memory/3012-12-0x000000001D220000-0x000000001D232000-memory.dmp

                    Filesize

                    72KB

                    Download

                  • memory/3012-13-0x000000001D280000-0x000000001D2BC000-memory.dmp

                    Filesize

                    240KB

                    Download

                  • memory/3012-14-0x00007FFE49480000-0x00007FFE49F42000-memory.dmp

                    Filesize

                    10.8MB

                    Download

                  • memory/3012-15-0x00007FFE49480000-0x00007FFE49F42000-memory.dmp

                    Filesize

                    10.8MB

                    Download